Cisco Cisco IOS Software Release 12.0(22)S
( D R A F T L A B E L ) A L P H A D R A F T - C I S C O C O N F I D E N T I A L
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Cisco IOS Release 12.0(22)S
MPLS Traffic Engineering and Enhancements
Feature History
This feature module describes MPLS traffic engineering and enhancements. The document includes the
following sections:
following sections:
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Feature Overview
Multiprotocol Label Switching (MPLS) traffic engineering software enables an MPLS backbone to
replicate and expand upon the traffic engineering capabilities of Layer 2 ATM and Frame Relay
networks. MPLS is an integration of Layer 2 and Layer 3 technologies. By making traditional Layer 2
features available to Layer 3, MPLS enables traffic engineering. Thus, you can offer in a one-tier
network what now can be achieved only by overlaying a Layer 3 network on a Layer 2 network.
replicate and expand upon the traffic engineering capabilities of Layer 2 ATM and Frame Relay
networks. MPLS is an integration of Layer 2 and Layer 3 technologies. By making traditional Layer 2
features available to Layer 3, MPLS enables traffic engineering. Thus, you can offer in a one-tier
network what now can be achieved only by overlaying a Layer 3 network on a Layer 2 network.
Traffic engineering is essential for service provider and Internet service provider (ISP) backbones. Such
backbones must support a high use of transmission capacity, and the networks must be very resilient so
that they can withstand link or node failures.
backbones must support a high use of transmission capacity, and the networks must be very resilient so
that they can withstand link or node failures.
Release
Modification
12.0(5)S
This feature was introduced as MPLS Traffic Engineering.
12.1(3)T
This feature was updated and integrated into Cisco IOS Release 12.1(3)T.
The title of the feature module changed to MPLS Traffic Engineering and
Enhancements.
The title of the feature module changed to MPLS Traffic Engineering and
Enhancements.
12.0(10)ST
This feature was integrated into Cisco IOS Release 12.0(10)ST.
12.0(22)S
This feature was integrated into Cisco IOS Release 12.0(22)S.